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annotate org.eclipse.jface.text/src/org/eclipse/jface/text/templates/PositionBasedCompletionProposal.d @ 12:bc29606a740c

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Added dwt-addons in original directory structure of eclipse.org
author Frank Benoit <benoit@tionex.de>
date Sat, 14 Mar 2009 18:23:29 +0100
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1 /*******************************************************************************
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2 * Copyright (c) 2000, 2008 IBM Corporation and others.
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3 * All rights reserved. This program and the accompanying materials
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4 * are made available under the terms of the Eclipse Public License v1.0
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5 * which accompanies this distribution, and is available at
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6 * http://www.eclipse.org/legal/epl-v10.html
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7 *
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8 * Contributors:
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9 * IBM Corporation - initial API and implementation
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10 * Port to the D programming language:
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11 * Frank Benoit <benoit@tionex.de>
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12 *******************************************************************************/
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13
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15 module org.eclipse.jface.text.templates.PositionBasedCompletionProposal;
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16
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17 import org.eclipse.jface.text.templates.SimpleTemplateVariableResolver; // packageimport
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18 import org.eclipse.jface.text.templates.TemplateBuffer; // packageimport
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19 import org.eclipse.jface.text.templates.TemplateContext; // packageimport
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20 import org.eclipse.jface.text.templates.TemplateContextType; // packageimport
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21 import org.eclipse.jface.text.templates.Template; // packageimport
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22 import org.eclipse.jface.text.templates.TemplateVariable; // packageimport
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23 import org.eclipse.jface.text.templates.TemplateException; // packageimport
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24 import org.eclipse.jface.text.templates.TemplateTranslator; // packageimport
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25 import org.eclipse.jface.text.templates.DocumentTemplateContext; // packageimport
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26 import org.eclipse.jface.text.templates.GlobalTemplateVariables; // packageimport
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27 import org.eclipse.jface.text.templates.InclusivePositionUpdater; // packageimport
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28 import org.eclipse.jface.text.templates.TemplateProposal; // packageimport
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29 import org.eclipse.jface.text.templates.ContextTypeRegistry; // packageimport
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30 import org.eclipse.jface.text.templates.JFaceTextTemplateMessages; // packageimport
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31 import org.eclipse.jface.text.templates.TemplateCompletionProcessor; // packageimport
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32 import org.eclipse.jface.text.templates.TextTemplateMessages; // packageimport
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33 import org.eclipse.jface.text.templates.TemplateVariableType; // packageimport
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34 import org.eclipse.jface.text.templates.TemplateVariableResolver; // packageimport
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35
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36 import java.lang.all;
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37 import java.util.Set;
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41
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42
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43 import org.eclipse.swt.graphics.Image;
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44 import org.eclipse.swt.graphics.Point;
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45 import org.eclipse.core.runtime.Assert;
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46 import org.eclipse.jface.text.BadLocationException;
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47 import org.eclipse.jface.text.DocumentEvent;
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48 import org.eclipse.jface.text.IDocument;
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49 import org.eclipse.jface.text.ITextViewer;
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50 import org.eclipse.jface.text.Position;
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51 import org.eclipse.jface.text.contentassist.ICompletionProposal;
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52 import org.eclipse.jface.text.contentassist.ICompletionProposalExtension2;
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53 import org.eclipse.jface.text.contentassist.IContextInformation;
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54
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55
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56 /**
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57 * A position based completion proposal.
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58 *
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59 * @since 3.0
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60 */
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61 final class PositionBasedCompletionProposal : ICompletionProposal, ICompletionProposalExtension2 {
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62
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63 /** The string to be displayed in the completion proposal popup */
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64 private String fDisplayString;
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65 /** The replacement string */
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66 private String fReplacementString;
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67 /** The replacement position. */
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68 private Position fReplacementPosition;
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69 /** The cursor position after this proposal has been applied */
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70 private int fCursorPosition;
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71 /** The image to be displayed in the completion proposal popup */
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72 private Image fImage;
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73 /** The context information of this proposal */
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74 private IContextInformation fContextInformation;
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75 /** The additional info of this proposal */
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76 private String fAdditionalProposalInfo;
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77
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78 /**
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79 * Creates a new completion proposal based on the provided information. The replacement string is
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80 * considered being the display string too. All remaining fields are set to <code>null</code>.
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81 *
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82 * @param replacementString the actual string to be inserted into the document
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83 * @param replacementPosition the position of the text to be replaced
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84 * @param cursorPosition the position of the cursor following the insert relative to replacementOffset
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85 */
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86 public this(String replacementString, Position replacementPosition, int cursorPosition) {
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87 this(replacementString, replacementPosition, cursorPosition, null, null, null, null);
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88 }
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89
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90 /**
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91 * Creates a new completion proposal. All fields are initialized based on the provided information.
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92 *
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93 * @param replacementString the actual string to be inserted into the document
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94 * @param replacementPosition the position of the text to be replaced
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95 * @param cursorPosition the position of the cursor following the insert relative to replacementOffset
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96 * @param image the image to display for this proposal
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97 * @param displayString the string to be displayed for the proposal
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98 * @param contextInformation the context information associated with this proposal
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99 * @param additionalProposalInfo the additional information associated with this proposal
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100 */
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101 public this(String replacementString, Position replacementPosition, int cursorPosition, Image image, String displayString, IContextInformation contextInformation, String additionalProposalInfo) {
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102 Assert.isNotNull(replacementString);
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103 Assert.isTrue(replacementPosition !is null);
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104
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105 fReplacementString= replacementString;
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106 fReplacementPosition= replacementPosition;
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107 fCursorPosition= cursorPosition;
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108 fImage= image;
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109 fDisplayString= displayString;
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110 fContextInformation= contextInformation;
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111 fAdditionalProposalInfo= additionalProposalInfo;
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112 }
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113
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114 /*
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115 * @see ICompletionProposal#apply(IDocument)
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116 */
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117 public void apply(IDocument document) {
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118 try {
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119 document.replace(fReplacementPosition.getOffset(), fReplacementPosition.getLength(), fReplacementString);
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120 } catch (BadLocationException x) {
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121 // ignore
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122 }
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123 }
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124
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125 /*
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126 * @see ICompletionProposal#getSelection(IDocument)
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127 */
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128 public Point getSelection(IDocument document) {
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129 return new Point(fReplacementPosition.getOffset() + fCursorPosition, 0);
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130 }
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131
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132 /*
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133 * @see ICompletionProposal#getContextInformation()
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134 */
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135 public IContextInformation getContextInformation() {
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136 return fContextInformation;
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137 }
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138
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139 /*
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140 * @see ICompletionProposal#getImage()
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141 */
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142 public Image getImage() {
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143 return fImage;
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144 }
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145
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146 /*
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147 * @see org.eclipse.jface.text.contentassist.ICompletionProposal#getDisplayString()
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148 */
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149 public String getDisplayString() {
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150 if (fDisplayString !is null)
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151 return fDisplayString;
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152 return fReplacementString;
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153 }
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154
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155 /*
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156 * @see ICompletionProposal#getAdditionalProposalInfo()
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157 */
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158 public String getAdditionalProposalInfo() {
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159 return fAdditionalProposalInfo;
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160 }
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161
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162 /*
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163 * @see org.eclipse.jface.text.contentassist.ICompletionProposalExtension2#apply(org.eclipse.jface.text.ITextViewer, char, int, int)
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164 */
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165 public void apply(ITextViewer viewer, char trigger, int stateMask, int offset) {
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166 apply(viewer.getDocument());
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167 }
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168
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169 /*
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170 * @see org.eclipse.jface.text.contentassist.ICompletionProposalExtension2#selected(org.eclipse.jface.text.ITextViewer, bool)
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171 */
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172 public void selected(ITextViewer viewer, bool smartToggle) {
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173 }
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174
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175 /*
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176 * @see org.eclipse.jface.text.contentassist.ICompletionProposalExtension2#unselected(org.eclipse.jface.text.ITextViewer)
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177 */
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178 public void unselected(ITextViewer viewer) {
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179 }
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180
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181 /*
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182 * @see org.eclipse.jface.text.contentassist.ICompletionProposalExtension2#validate(org.eclipse.jface.text.IDocument, int, org.eclipse.jface.text.DocumentEvent)
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183 */
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184 public bool validate(IDocument document, int offset, DocumentEvent event) {
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185 try {
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186 String content= document.get(fReplacementPosition.getOffset(), offset - fReplacementPosition.getOffset());
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187 if (fReplacementString.startsWith(content))
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188 return true;
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189 } catch (BadLocationException e) {
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190 // ignore concurrently modified document
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191 }
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192 return false;
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193 }
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194
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195 }